Famed Watergate journalist Carl Bernstein says that the investigation into former National Security Advisor Michael Flynn could end up revealing a “cover-up” of alleged connections between President Donald Trump‘s team and Russia.

“There, he is central to what the FBI believes is a cover-up going on among people close to the president of the United States about what happened with the Trump campaign and Russia,” Mr Bernstein, who is now a CNN commentator, said. “The FBI, the congressional investigators are trying to learn what happened. And Flynn is almost like the ball of yarn that begins to unspool and is key to understanding it.”

Mr Bernstein said that Deputy Attorney General Rod Rosenstein, now that he is leading the Justice Department’s probe into Russia’s role alleged in the election, will eventually see that there is a cover-up as well.